# Configure Traffic Shaping

To change your traffic shaping configuration.

1. Under Server Configuration, click Traffic Shaping.

2. Set Service status to Enabled. This service must be enabled before you can use it.

3. Divide your available bandwidth for categorization by entering the amount of upload bandwidth you have on this connection. Enter available upload bandwidth in kbit or mbit.

4. The "UDP trunk ports" field allows you to configure UDP ports on the VPN as voice trunks:

   - To specify a port range, separate the two port numbers by a colon. For example: 5000:5236

   - To specify multiple individual ports, separate the port numbers with commas. For example: 9000,9002,10000,10002

   - To specify multiple port ranges, separate the ranges by a comma. For example: 5000:5236,50000:50126

   You should be able to safely leave this value at its default.

5. The "Trunk control ports" field allows you to configure TCP ports on the VPN as control ports:

   - To specify a port range, separate the two port numbers by a colon.

   - To specify multiple individual ports, separate with commas.

   - To specify multiple port ranges, separate the ranges by a comma.

   You should be able to safely leave this value at its default.

6. Click Save.